@charset "utf-8";
/* CSS Document */
*{ margin:0; padding:0;}
ul,li{ list-style:none;}
a{ text-decoration:none;}
nav{ width:1000px;
     margin:0 auto;
     background:rgba(51,51,0.3);
	 background:url(../images/1.jpg) no-repeat;
	 background-size:100% 100%;
	 background-position:250px 0;
	 }
ul{ position:relative;}
ul,li{ width:250px; height:60px; line-height:60px; text-align:center;}
ul li .pic_show{
	width:750px;
    height:960px;
	position:absolute;
	top:0；
	left:250px;
	background:#CCC;
	display:none;
	padding-top:60px;
	}
ul li:hover{ background:rgba(255,0,0,0.2);}
ul li:hover .pic_show{ display:block;}